Rotary discharging apparatus.



PATENTED SEPT. 5,1905.

3. J. POWER. ROTARY DISCHARGING APPARATUS.

APPLIOATION FILED MAB- 28, 1904.

WITNESSES IN VE N 7 0R ATTORNEYJ,

tinirn sra rns PATENT ora ion.

JEFFREY POWER, OF B'IADISON, WISCONSIN, ASSIGNOR OF ONE-HALF TO LE ROY W STEVENS, OF SYRACUSE, NEW YORK.

ROTARY DlSCHARGlNG APPARATUS.

Specification of Letters Patent.

Patented Sept. 5, 1905.

Application filed March 28, 1904. Serial No. 200,261-

To (all whom it may concern:

Be it known that I, JEFFREY J. POWER, a citizen of the United States, residing at Madison, county of Dane, and State of \Visconsin, have invented new and useful Improvements in Rotary Discharging Apparatus, of which the following is a specification.

My invention relates to improvements in rotary d ischargingapparatus, the same beingdcsigned especially for use in discharging shredded cornstalks and leaves from a corn-husking machine or straw from a threshing-machine, although my invention is also adapted and intended to be used in any case where it is de. sired to deliver air or other material through a pipe or chute by means of revolving wings.

Heretofore blowers have been constructed for such purposes in which the material is delivered through the chute by means of a blast of air produced by the revolving wings. In

- some of the constructions heretofore used the material is drawn into the blower through an axially-located eye constituting a suction-aperture. In other cases the material is discharged into the air-blast beyond the field of movement of the wings-to wit, in the chute or delivery-passage. In the first class of cases the material and the air drawn into the blower at the eye are carried around and move outwardly by centrifugal force until discharged from the chute. In the second class of cases the air-blast is produced in the same way, but the material is driven through the chute by the force of the blast itself. In either case an extremely high speed is required, as the centrifugal force of the blast itself is relied upon for the discharge of the material.

The object of my invention is to provide a form of construction in which the material may be subjected to the direct action of the rotating wings without being carried around by them, whereby the material is struck or batted by the wings or by a cushion-film of compressed air moving immediately in front of each wing. the material being thus driven through the chute by the direct force of the rebound from the surface of the wing. A considerable reduction of speed and consequent economy of power is thus rendered possible.

In the following description reference is had to the accompanying drawings, in which- Figure 1 is a side view of my invention with the near wall of the casing removed and showing the inlet-aperture in the remaining side wall. Fig. 2 is a vertical sectional view drawn on line a; a: of Fig. 1. Fig. 3 is a side view showing the shaft and feed-trough in crosssection. Fig. 4 is a sectional view drawn on line ;1 1 of Fig. 1.

Like parts are identified by the same reference characters throughout the several views. 1 is a casing having a generally cylindrical form and provided with a discharge-chute 2, extending tangentially from the periphery of the casing.

3 is a supporting-shaft extending through bearings 4 in the casing andgprovided within the casing with a disk 5, which is rigidly secured to the shaft by a setscrew 6 or in any other convenient manner. One face of the disk 5 is provided withjirojections 8, havingradial apertures orsockets in which wingshanks 9 are adapted to fit. The shanks 9 may be adjusted radially in the sockets and are secured in any desired position of adjustment by set-screws 10. Suitable wings 11 are rigidly secured to the shanks 9.

One side wall of the casing is provided with an inlet-aperture 1+1, which is located between the axis zi. 0., the line of the shaft JF-and a circle in the side wall of the casing parallel with the outer circle of ring rotation. This aperture is also substantially in line with the .lower end of the discharge-chute 2, whereby air and other material entering the casing through the aperture let-may be struck by the -wings 11 and thrown through the chute 2 by the rebound.

An inclined feed-trough 15 leads to the aperture 14 and is partially covered at 16, leavinga feed-opening at 17, which extends longitudinally from the casing outwardly in that portion of the upper wall of the trough nearest the discharge-chute, so that the material is permitted to enter the trough along its rear upper side-/. 0., the upper portion of that part of the feed-trough which is nearest to the discharge-chute' In operation the air within the casingl will be thrown outwardly by centrifugal force, creating a partial vacuum at the center and in the rear of the wings 1]. Most of the air which remains in the casing is compressed upon the face or front of the wings, leaving an almost complete vacuum in the rear of the wings where they-arc first exposed at the front upper corner of the aperture 1st, (indicated at (6 in the Fig. 1.) The faces of the wings material is not only carried between carry the air which is being thrown out of the casing, and this air tends to push out laterally into the trough 15 near the rear corner of the aperture 14, (indicated at b in Fig. 1.) On the other hand, the vacuum at a is extended into the trough under the upper wall or partlfi, and the air rushing in through the opening 17 to satisfy this vacuum passes downwardly and forwardly along thecurved bottom of the trough towardthe point a and is deflected by the trough and the light outwardly-moving current at b, all of which tend to cause the downwardly, forwardly, and inwardly moving current to rotate spirally in a cyclonic vhirl and a direction opposite that of wing rotation. The force and, intensity of this whirling current increase-as it approaches the inlet-aperture 14, so that tll lle t e wings, but whirled forcibly against the wings and batted by them through the discharge spout. The aperture M- is preferably so located that the outer ends of the wings '11 when in normal position will project past suchaperture, whereby all the material entering the aperture will be struck by the wings. Experiments which I have conducted in connection with the delivery of shredded cornstalks have demonstrated that a speed of approximately three hundred and fifty revolutions per minute will be sufiicient to deliver the material through a chute such as would require a speed of approximatelyeight hundred revolutions per minute in an ordinary blower having an intake or suction aperture at the eye. V

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the described class, the combination of an inclosing casing provided with a discharge-aperture; a set of revolving wings in said casing; and a feed-trough leading to an aperture in the casing between its periphery and the axis of wing rotation; said feed-trough being partially open to the exterior adjacent to the casing.

2. In a device of the described class, the combination of a set of revolving wii'ngs; an inclosing casing therefor, provided with a peripheral discharge-aperture and having an inlet-aperture in its side wall between the axis and a circle parallel with the outer circle oi wing rotation; and an inclined, feed'trough having a feed-opening alonglone side and arranged to admit air tangentially and deflect it along a spiral line leading to that portion of the inlet-aperture where the rotary wings are first exposed.

3. In a device of the described class, aset of revolving wings; a casing inclosing the same, and provided with a peripheral discharge-opening; a feed-trough leading to an inlet-aperture in the casing at one side of the path of the wings and between the axis of their rotation and a circle in the side wall of the casing parallel with the circle described by the outer edges of the wings; said feedtrough having a feed-opening in one of ,its side Walls, extending outwardly from a point adjacent to the inlet-aperture of the casing.

4:. In a device of the described class, a set of revolving wings; a casing inclosingthe same, and provided with a peripheral .discharge-opening, a feed trough leading to an path of the wings and between the axis of their rotation and a circle in the side wall of the casing parallel with the circle described by the outer edges of the wings; 'said feedtrough having a feed-opening extending outwardly from adjacent to the inlet-aperture of the casing and in the rear portion of the upper wall of the trough.

5. In a device of the described class, a set of revolving wings; same; a discharge-tube, leading tangentially from the periphery of the casing; and a feedtrough communicating with the interior of the casing through an aperture at one side of the axis of the discharge-tube projected within the casing, and between the wing-axis and the outer circle of wing rotation said feed-trough having a longitudinal opening in that portion of its upper wall nearest the discharge-tube.

6. In a device of the described class, a set of revolving wings; a casing inclosing the same; a discharge-tube, leading tangentially from the periphery of the casing; and a feedtrough communicating with the interior of the casing through an aperture at one side of the axis of the discharge-tube projected Within the casing, and between the wing-axis and the outer circle of wing rotation; said feed-trough having a concave bottom and a longitudinal opening in that portion of its upper wall nearest the discharge-tube.

' In testimony whereof I afiix my'signature in the presence of two witnesses.

JEFFREY J. POWER Witnesses:

JAs. B. Eswnv, Lnvaan'rr C. WHEELER,

' inlet-aperture in the-casing atone side of the a casing inclosing the- 

